Research into creative thinkers has revealed that they have personalities full of contradictions. Eminent psychologist Mihaly Csikzentmihalyi has discovered that creative people ‘contain contradictory extremes; instead of being an individual, each of them is a multitude.”
Rolf Dobelli, The art of thinking clearly
From a Rafflesian point of view, maybe there is some merit to having a two-headed bird. More people, more ideas.